Use the & operator to see the shared categories of two terms. E.g. cola & coffee or divorce & war

Use the & operator to see the shared categories of two terms. E.g. cola & coffee or divorce & war

- mathematical:topic,
- difficult:thing,
- useful:thing,
- advanced:mathematics,
- complex:subject,
- abstract:subject,
- new:topic,
- mathematical:discipline,
- traditional:topic,
- advanced:math,
- pure:mathematics,
- secular:subject,
- simple:math,
- geometric:idea,
- mathematical:science,
- mathematical:subject,
- new:discipline,
- complicated:domain,
- advanced:topic,
- complex:math,
- quantitative:topic,
- traditional:content,
- complicated:math,
- traditional:mathematics,
- complicated:mathematics,
- conceptual:subject,
- complicated:topic,
- advanced:subject,
- difficult:subject,
- basic:math,
- academic:subject,
- spatial:math,
- crucial:topic,
- elementary:mathematics,
- basic:mathematics,
- difficult:topic,
- tough:subject,